Improvement in stove-grates



E. DEWITT.

Stove-Grates.

-N0.135,095. Patentedlan2l,1873.

INVENTOR.

flw a f MMM AM. PHOT0-UTIIOGRAPHIC ca nflmamsls mums) UNITED STATES EZRADEWITT, OF BELVIDERE, NEW JERSEY.

IMPROVEMENT IN STOVE-GRATES.

Specification forming part of Letters Patent No. 135,095, dated January21, 1873.

To all whom it may concern:

' Be it known that I, EZRA DEWITT, of Belvidere, in the county of Warrenand State of New Jersey, have invented a new and valuable Improvement inStove-Grates; and I do hereby declare that the following is a full,clear, and exact description of the construc-' tion and operation of thesame, reference bein g had to the annexed drawing making a part of thisspecification, and to the letters and figures of reference markedthereon.

Figure 1 of the drawing is a top view of my grate. Fig. 2 is a verticalsection of same with gratings depressed. Fig. 3 is a vertical sectiontaken at right angles to the section shown in Fig. 2, the gratings beingraised.

This invention has relation to grates for stoves and furnaces; and itconsists in the construction and novel arrangement of the tiltingsections of the grate, the cam-shaft, and the guard, whereby saidsections are vibrated toward and from each other. The object of thepresent invention is to provide a grate from which clinkers and otherobstructions can be readily cleaned without disturbing the fire-bed, themechanism at the same time serving as a very effectual means for shakingthe ashes from the grate.

In the accompanying drawing, the letter A designates the stove-wall, andB indicates the wall of the fire-pot, connected with the stovewall by aflange or otherwise above the grate level, and having its lower edgeextending down thereto. 0 indicates the grate. This consists of twosectional gratings, D and E, pivoted at their adjacent edges to thestovewall by means of suitable journals a and seatlugs 12. Each gratingconsists of a circumscribing bar, 0, grate-bars d running parallel withthe planes of vibration, and an exterior flange, 61, extending upwardand outward from the outer portion of the bar 0. -This flange is notusually continuous, but is provided with notches 0, preferably situatedin line with the prolongation of each grate-bar (1. Below the grateextends the cam-shaft D, centrally and transversely, so that its planeof rotation will be at right angles with the plane of vibration of thegratings D and E.

This shaft is provided near each end, just under the bar 0, with theeccentrics or cams F, by the oscillation of which on the shaft D thegratings are made to vibrate from or toward each other. A strip ofmetal, Z, is attached to the opposite sides of the stove-wall andarranged to bridge or cover the intermediate space between the gratings,which is enlarged when they are vibrated from each other. By this meansclinker and pieces of coal are prevented from becoming wedged in betweenthe adjacent edges of the gratings and obstructing their operation. Themiddle portion ot the grate within the bar 0 is rounded upward towardthe center, or made in convex form, so that clinker and otherobstructions will tend toward the circumference.

In the operation of this grate attention is directed to the ease withwhich the fire-bed can be removed after it has become obstructed at itsbase by the accumulation of clinker and other matter. The gratings areshaken to and from each other by applying a crankkey to the end of thecam-shaft, which is provided with a key-seat, k, for this purpose.

Olinker is removed by turning the eccentrics downward sufficiently toallow the outer edge of each grating to fall below the wall of thefire-pot. The clinker can then be readily raked out, and the gratings,being turned up toward each other, are without obstruction to the draft,and the bed of live coals above may now be thrown down upon the grate byagitatin g them, if necessary, by means of a poker or otherwise.

What I claim as my invention, and desire to secure by Letters Patent,is-

The combination of the sectional vibratory gratings D E, pivoted attheir adjacent edges, with the cam-shaft D, eccentrics F, and centralguard-plate or bridge Z, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

EZRA DEWITT, Witnesses:

PHIL. O. MASI, D. D. KANE.

